660 lines
15 KiB
C
660 lines
15 KiB
C
/*
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* Copyright (c), Recep Aslantas.
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*
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* MIT License (MIT), http://opensource.org/licenses/MIT
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* Full license can be found in the LICENSE file
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*/
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/*
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Macros:
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GLM_IVEC2_ONE_INIT
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GLM_IVEC2_ZERO_INIT
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GLM_IVEC2_ONE
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GLM_IVEC2_ZERO
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Functions:
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CGLM_INLINE void glm_ivec2(int * __restrict v, ivec2 dest)
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CGLM_INLINE void glm_ivec2_copy(ivec2 a, ivec2 dest)
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CGLM_INLINE void glm_ivec2_zero(ivec2 v)
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CGLM_INLINE void glm_ivec2_one(ivec2 v)
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CGLM_INLINE int glm_ivec2_dot(ivec2 a, ivec2 b)
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CGLM_INLINE int glm_ivec2_cross(ivec2 a, ivec2 b)
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CGLM_INLINE void glm_ivec2_add(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_adds(ivec2 v, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_sub(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_subs(ivec2 v, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_mul(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_scale(ivec2 v, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_div(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_divs(ivec2 v, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_mod(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_addadd(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_addadds(ivec2 a, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_subadd(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_subadds(ivec2 a, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_muladd(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_muladds(ivec2 a, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_maxadd(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_minadd(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_subsub(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_subsubs(ivec2 a, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_addsub(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_addsubs(ivec2 a, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_mulsub(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_mulsubs(ivec2 a, int s, ivec2 dest)
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CGLM_INLINE void glm_ivec2_maxsub(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_minsub(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE int glm_ivec2_distance2(ivec2 a, ivec2 b)
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CGLM_INLINE float glm_ivec2_distance(ivec2 a, ivec2 b)
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CGLM_INLINE void glm_ivec2_fill(ivec2 v, int val);
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CGLM_INLINE bool glm_ivec2_eq(ivec2 v, int val);
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CGLM_INLINE bool glm_ivec2_eqv(ivec2 a, ivec2 b);
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CGLM_INLINE void glm_ivec2_maxv(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_minv(ivec2 a, ivec2 b, ivec2 dest)
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CGLM_INLINE void glm_ivec2_clamp(ivec2 v, int minVal, int maxVal)
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CGLM_INLINE void glm_ivec2_abs(ivec2 v, ivec2 dest)
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*/
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#ifndef cglm_ivec2_h
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#define cglm_ivec2_h
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#include "common.h"
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#include "util.h"
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#define GLM_IVEC2_ONE_INIT {1, 1}
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#define GLM_IVEC2_ZERO_INIT {0, 0}
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#define GLM_IVEC2_ONE ((ivec2)GLM_IVEC2_ONE_INIT)
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#define GLM_IVEC2_ZERO ((ivec2)GLM_IVEC2_ZERO_INIT)
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/*!
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* @brief init ivec2 using vec3 or vec4
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*
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* @param[in] v vector
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* @param[out] dest destination
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*/
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CGLM_INLINE
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void
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glm_ivec2(int * __restrict v, ivec2 dest) {
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dest[0] = v[0];
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dest[1] = v[1];
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}
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/*!
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* @brief copy all members of [a] to [dest]
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*
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* @param[in] a source vector
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* @param[out] dest destination
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*/
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CGLM_INLINE
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void
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glm_ivec2_copy(ivec2 a, ivec2 dest) {
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dest[0] = a[0];
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dest[1] = a[1];
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}
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/*!
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* @brief set all members of [v] to zero
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*
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* @param[out] v vector
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*/
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CGLM_INLINE
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void
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glm_ivec2_zero(ivec2 v) {
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v[0] = v[1] = 0;
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}
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/*!
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* @brief set all members of [v] to one
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*
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* @param[out] v vector
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*/
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CGLM_INLINE
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void
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glm_ivec2_one(ivec2 v) {
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v[0] = v[1] = 1;
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}
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/*!
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* @brief ivec2 dot product
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*
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* @param[in] a vector1
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* @param[in] b vector2
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*
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* @return dot product
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*/
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CGLM_INLINE
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int
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glm_ivec2_dot(ivec2 a, ivec2 b) {
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return a[0] * b[0] + a[1] * b[1];
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}
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/*!
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* @brief ivec2 cross product
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*
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* REF: http://allenchou.net/2013/07/cross-product-of-2d-vectors/
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*
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* @param[in] a vector1
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* @param[in] b vector2
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*
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* @return Z component of cross product
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*/
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CGLM_INLINE
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int
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glm_ivec2_cross(ivec2 a, ivec2 b) {
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return a[0] * b[1] - a[1] * b[0];
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}
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/*!
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* @brief add vector [a] to vector [b] and store result in [dest]
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest destination
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*/
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CGLM_INLINE
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void
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glm_ivec2_add(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] = a[0] + b[0];
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dest[1] = a[1] + b[1];
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}
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/*!
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* @brief add scalar s to vector [v] and store result in [dest]
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*
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* @param[in] v vector
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* @param[in] s scalar
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* @param[out] dest destination
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*/
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CGLM_INLINE
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void
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glm_ivec2_adds(ivec2 v, int s, ivec2 dest) {
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dest[0] = v[0] + s;
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dest[1] = v[1] + s;
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}
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/*!
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* @brief subtract vector [b] from vector [a] and store result in [dest]
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest destination
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*/
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CGLM_INLINE
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void
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glm_ivec2_sub(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] = a[0] - b[0];
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dest[1] = a[1] - b[1];
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}
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/*!
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* @brief subtract scalar s from vector [v] and store result in [dest]
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*
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* @param[in] v vector
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* @param[in] s scalar
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* @param[out] dest destination
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*/
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CGLM_INLINE
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void
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glm_ivec2_subs(ivec2 v, int s, ivec2 dest) {
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dest[0] = v[0] - s;
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dest[1] = v[1] - s;
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}
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/*!
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* @brief multiply vector [a] with vector [b] and store result in [dest]
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest destination
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*/
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CGLM_INLINE
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void
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glm_ivec2_mul(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] = a[0] * b[0];
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dest[1] = a[1] * b[1];
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}
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/*!
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* @brief multiply vector [a] with scalar s and store result in [dest]
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*
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* @param[in] v vector
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* @param[in] s scalar
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* @param[out] dest destination
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*/
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CGLM_INLINE
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void
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glm_ivec2_scale(ivec2 v, int s, ivec2 dest) {
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dest[0] = v[0] * s;
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dest[1] = v[1] * s;
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}
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/*!
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* @brief div vector with another component-wise division: d = a / b
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*
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* @param[in] a vector 1
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* @param[in] b vector 2
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* @param[out] dest result = (a[0]/b[0], a[1]/b[1])
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*/
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CGLM_INLINE
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void
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glm_ivec2_div(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] = a[0] / b[0];
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dest[1] = a[1] / b[1];
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}
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/*!
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* @brief div vector with scalar: d = v / s
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*
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* @param[in] v vector
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* @param[in] s scalar
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* @param[out] dest result = (a[0]/s, a[1]/s)
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*/
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CGLM_INLINE
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void
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glm_ivec2_divs(ivec2 v, int s, ivec2 dest) {
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dest[0] = v[0] / s;
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dest[1] = v[1] / s;
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}
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/*!
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* @brief mod vector with another component-wise modulo: d = a % b
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*
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* @param[in] a vector 1
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* @param[in] b vector 2
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* @param[out] dest result = (a[0]%b[0], a[1]%b[1])
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*/
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CGLM_INLINE
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void
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glm_ivec2_mod(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] = a[0] % b[0];
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dest[1] = a[1] % b[1];
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}
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/*!
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* @brief add vector [a] with vector [b] and add result to vector [dest]
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*
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* applies += operator so dest must be initialized
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest dest += (a + b)
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*/
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CGLM_INLINE
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void
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glm_ivec2_addadd(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] += a[0] + b[0];
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dest[1] += a[1] + b[1];
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}
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/*!
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* @brief add scalar [s] onto vector [a] and add result to vector [dest]
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*
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* applies += operator so dest must be initialized
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*
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* @param[in] a vector
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* @param[in] s scalar
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* @param[out] dest dest += (a + s)
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*/
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CGLM_INLINE
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void
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glm_ivec2_addadds(ivec2 a, int s, ivec2 dest) {
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dest[0] += a[0] + s;
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dest[1] += a[1] + s;
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}
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/*!
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* @brief subtract vector [a] from vector [b] and add result to [dest]
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*
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* applies += operator so dest must be initialized
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest dest += (a - b)
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*/
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CGLM_INLINE
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void
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glm_ivec2_subadd(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] += a[0] - b[0];
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dest[1] += a[1] - b[1];
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}
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/*!
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* @brief subtract scalar [s] from vector [a] and add result to [dest]
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*
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* applies += operator so dest must be initialized
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*
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* @param[in] a first
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* @param[in] s scalar
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* @param[out] dest dest += (a - s)
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*/
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CGLM_INLINE
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void
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glm_ivec2_subadds(ivec2 a, int s, ivec2 dest) {
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dest[0] += a[0] - s;
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dest[1] += a[1] - s;
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}
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/*!
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* @brief multiply vector [a] with vector [b] and add result to [dest]
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*
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* applies += operator so dest must be initialized
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest dest += (a * b)
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*/
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CGLM_INLINE
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void
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glm_ivec2_muladd(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] += a[0] * b[0];
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dest[1] += a[1] * b[1];
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}
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/*!
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* @brief multiply vector [a] with scalar [s] and add result to [dest]
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*
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* applies += operator so dest must be initialized
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*
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* @param[in] a vector
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* @param[in] s scalar
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* @param[out] dest dest += (a * s)
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*/
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CGLM_INLINE
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void
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glm_ivec2_muladds(ivec2 a, int s, ivec2 dest) {
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dest[0] += a[0] * s;
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dest[1] += a[1] * s;
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}
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/*!
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* @brief add maximum of vector [a] and vector [b] to vector [dest]
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*
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* applies += operator so dest must be initialized
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest dest += max(a, b)
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*/
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CGLM_INLINE
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void
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glm_ivec2_maxadd(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] += glm_imax(a[0], b[0]);
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dest[1] += glm_imax(a[1], b[1]);
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}
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/*!
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* @brief add minimum of vector [a] and vector [b] to vector [dest]
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*
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* applies += operator so dest must be initialized
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest dest += min(a, b)
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*/
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CGLM_INLINE
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void
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glm_ivec2_minadd(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] += glm_imin(a[0], b[0]);
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dest[1] += glm_imin(a[1], b[1]);
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}
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/*!
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* @brief subtract vector [a] from vector [b] and subtract result from [dest]
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*
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* applies -= operator so dest must be initialized
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*
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* @param[in] a first vector
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* @param[in] b second vector
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* @param[out] dest dest -= (a - b)
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*/
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CGLM_INLINE
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void
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glm_ivec2_subsub(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] -= a[0] - b[0];
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dest[1] -= a[1] - b[1];
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}
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/*!
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* @brief subtract scalar [s] from vector [a] and subtract result from [dest]
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*
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* applies -= operator so dest must be initialized
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*
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* @param[in] a vector
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* @param[in] s scalar
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* @param[out] dest dest -= (a - s)
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*/
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CGLM_INLINE
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void
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glm_ivec2_subsubs(ivec2 a, int s, ivec2 dest) {
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dest[0] -= a[0] - s;
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dest[1] -= a[1] - s;
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}
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/*!
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* @brief add vector [a] to vector [b] and subtract the result from [dest]
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*
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* applies -= operator so dest must be initialized
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*
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* @param[in] a vector
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* @param[in] b scalar
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* @param[out] dest dest -= (a + b)
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*/
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CGLM_INLINE
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void
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glm_ivec2_addsub(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] -= a[0] + b[0];
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dest[1] -= a[1] + b[1];
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}
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/*!
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* @brief add scalar [s] to vector [a] and subtract the result from [dest]
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*
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* applies -= operator so dest must be initialized
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*
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* @param[in] a vector
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* @param[in] s scalar
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* @param[out] dest dest -= (a + b)
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*/
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CGLM_INLINE
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void
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glm_ivec2_addsubs(ivec2 a, int s, ivec2 dest) {
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dest[0] -= a[0] + s;
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dest[1] -= a[1] + s;
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}
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/*!
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* @brief multiply vector [a] and vector [b] and subtract the result from [dest]
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*
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* applies -= operator so dest must be initialized
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*
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* @param[in] a vector
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* @param[in] b scalar
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* @param[out] dest dest -= (a * b)
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|
*/
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CGLM_INLINE
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void
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|
glm_ivec2_mulsub(ivec2 a, ivec2 b, ivec2 dest) {
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dest[0] -= a[0] * b[0];
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dest[1] -= a[1] * b[1];
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|
}
|
|
|
|
/*!
|
|
* @brief multiply vector [a] with scalar [s] and subtract the result from [dest]
|
|
*
|
|
* applies -= operator so dest must be initialized
|
|
*
|
|
* @param[in] a vector
|
|
* @param[in] s scalar
|
|
* @param[out] dest dest -= (a * s)
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_ivec2_mulsubs(ivec2 a, int s, ivec2 dest) {
|
|
dest[0] -= a[0] * s;
|
|
dest[1] -= a[1] * s;
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|
}
|
|
|
|
/*!
|
|
* @brief subtract maximum of vector [a] and vector [b] from vector [dest]
|
|
*
|
|
* applies += operator so dest must be initialized
|
|
*
|
|
* @param[in] a first vector
|
|
* @param[in] b second vector
|
|
* @param[out] dest dest -= max(a, b)
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_ivec2_maxsub(ivec2 a, ivec2 b, ivec2 dest) {
|
|
dest[0] -= glm_imax(a[0], b[0]);
|
|
dest[1] -= glm_imax(a[1], b[1]);
|
|
}
|
|
|
|
/*!
|
|
* @brief subtract minimum of vector [a] and vector [b] from vector [dest]
|
|
*
|
|
* applies -= operator so dest must be initialized
|
|
*
|
|
* @param[in] a first vector
|
|
* @param[in] b second vector
|
|
* @param[out] dest dest -= min(a, b)
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_ivec2_minsub(ivec2 a, ivec2 b, ivec2 dest) {
|
|
dest[0] -= glm_imin(a[0], b[0]);
|
|
dest[1] -= glm_imin(a[1], b[1]);
|
|
}
|
|
|
|
/*!
|
|
* @brief squared distance between two vectors
|
|
*
|
|
* @param[in] a first vector
|
|
* @param[in] b second vector
|
|
* @return returns squared distance (distance * distance)
|
|
*/
|
|
CGLM_INLINE
|
|
int
|
|
glm_ivec2_distance2(ivec2 a, ivec2 b) {
|
|
int xd, yd;
|
|
xd = a[0] - b[0];
|
|
yd = a[1] - b[1];
|
|
return xd * xd + yd * yd;
|
|
}
|
|
|
|
/*!
|
|
* @brief distance between two vectors
|
|
*
|
|
* @param[in] a first vector
|
|
* @param[in] b second vector
|
|
* @return returns distance
|
|
*/
|
|
CGLM_INLINE
|
|
float
|
|
glm_ivec2_distance(ivec2 a, ivec2 b) {
|
|
return sqrtf((float)glm_ivec2_distance2(a, b));
|
|
}
|
|
|
|
|
|
/*!
|
|
* @brief fill a vector with specified value
|
|
*
|
|
* @param[out] v dest
|
|
* @param[in] val value
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_ivec2_fill(ivec2 v, int val) {
|
|
v[0] = v[1] = val;
|
|
}
|
|
|
|
/*!
|
|
* @brief check if vector is equal to value
|
|
*
|
|
* @param[in] v vector
|
|
* @param[in] val value
|
|
*/
|
|
CGLM_INLINE
|
|
bool
|
|
glm_ivec2_eq(ivec2 v, int val) {
|
|
return v[0] == val && v[0] == v[1];
|
|
}
|
|
|
|
/*!
|
|
* @brief check if vector is equal to another
|
|
*
|
|
* @param[in] a vector
|
|
* @param[in] b vector
|
|
*/
|
|
CGLM_INLINE
|
|
bool
|
|
glm_ivec2_eqv(ivec2 a, ivec2 b) {
|
|
return a[0] == b[0]
|
|
&& a[1] == b[1];
|
|
}
|
|
|
|
/*!
|
|
* @brief set each member of dest to greater of vector a and b
|
|
*
|
|
* @param[in] a first vector
|
|
* @param[in] b second vector
|
|
* @param[out] dest destination
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_ivec2_maxv(ivec2 a, ivec2 b, ivec2 dest) {
|
|
dest[0] = a[0] > b[0] ? a[0] : b[0];
|
|
dest[1] = a[1] > b[1] ? a[1] : b[1];
|
|
}
|
|
|
|
/*!
|
|
* @brief set each member of dest to lesser of vector a and b
|
|
*
|
|
* @param[in] a first vector
|
|
* @param[in] b second vector
|
|
* @param[out] dest destination
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_ivec2_minv(ivec2 a, ivec2 b, ivec2 dest) {
|
|
dest[0] = a[0] < b[0] ? a[0] : b[0];
|
|
dest[1] = a[1] < b[1] ? a[1] : b[1];
|
|
}
|
|
|
|
/*!
|
|
* @brief clamp each member of [v] between minVal and maxVal (inclusive)
|
|
*
|
|
* @param[in, out] v vector
|
|
* @param[in] minVal minimum value
|
|
* @param[in] maxVal maximum value
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_ivec2_clamp(ivec2 v, int minVal, int maxVal) {
|
|
if (v[0] < minVal)
|
|
v[0] = minVal;
|
|
else if(v[0] > maxVal)
|
|
v[0] = maxVal;
|
|
|
|
if (v[1] < minVal)
|
|
v[1] = minVal;
|
|
else if(v[1] > maxVal)
|
|
v[1] = maxVal;
|
|
}
|
|
|
|
/*!
|
|
* @brief absolute value of v
|
|
*
|
|
* @param[in] v vector
|
|
* @param[out] dest destination
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_ivec2_abs(ivec2 v, ivec2 dest) {
|
|
dest[0] = abs(v[0]);
|
|
dest[1] = abs(v[1]);
|
|
}
|
|
|
|
#endif /* cglm_ivec2_h */
|